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3.
Site Assessment for Urban Tree Planting <ul><li>Collect detailed information about conditions at previously identified planting sites </li></ul><ul><li>Use information to: develop planting plan, determine what to plant, where to plant and what special methods are needed to reduce urban impacts on trees </li></ul>

10.
Calculate Soil Volume <ul><li>Typical tree pit in an urban area is only 4 feet by 4 feet in area – about 50 ft 3 of soil </li></ul><ul><li>Tree roots are typically confined to the pit due to compacted soils </li></ul><ul><li>Use designs that provide as much soil as possible for trees </li></ul>

12.
Evaluate Potential for Stormwater Treatment <ul><li>Many urban trees either receive too much stormwater runoff or do not receive enough water because surrounding pipes and pavement direct water away </li></ul><ul><li>Stormwater management and planting strategies should be used to manage runoff at planting sites that receive too much water and to direct runoff to other planting sites to provide treatment and reduce irrigation needs </li></ul>

13.
Evaluating Potential for Stormwater Treatment <ul><li>Sites should be evaluated to determine if they are: </li></ul><ul><ul><li>Under-capacity : currently does not receive runoff; runoff bypasses the site in pipe/ditch or is infiltrated </li></ul></ul><ul><ul><li>At-capacity : receive sheetflow only </li></ul></ul><ul><ul><li>Over-capacity : receive excessive runoff </li></ul></ul>

17.
Trees vs. Utilities <ul><li>Falling limbs can cause power outages, trees can grow into wires </li></ul><ul><li>Maintenance/repair of utilities can damage tree </li></ul><ul><li>Recommended setbacks from overhead wires: </li></ul><ul><ul><li>10 feet for small trees </li></ul></ul><ul><ul><li>15-20 feet for medium trees </li></ul></ul><ul><ul><li>20 to 40 feet for large trees </li></ul></ul><ul><ul><li>Trees planted under overhead wires must be 10 to 15 feet below the height of the wires at maturity </li></ul></ul><ul><li>Recommended setback from underground utilities is 10-15 feet </li></ul>

20.
Trees vs. Buildings <ul><li>Tree roots may crack foundations if planted too close to buildings </li></ul><ul><li>Root growth may become one-sided and cause tree to topple from high winds. </li></ul><ul><li>Recommended setbacks: </li></ul><ul><ul><li>15 feet for small trees </li></ul></ul><ul><ul><li>20-25 feet for large trees </li></ul></ul>

23.
Species Selection <ul><li>“ The right tree in the right place” </li></ul><ul><li>Selecting species with specific characteristics can reduce infrastructure conflicts: </li></ul><ul><ul><li>Choose shallow-rooted species when planting near sewer or drainage pipes </li></ul></ul><ul><ul><li>When planting near overhead wires, choose species with columnar form </li></ul></ul><ul><ul><li>Species with a small trunk flare or root buttress characteristics are ideal for planting next to pavement </li></ul></ul>

32.
Trash and Debris Cleanup <ul><li>May be done with volunteers </li></ul><ul><li>Evaluate the site to determine the type and volume of trash </li></ul><ul><li>Implement measures to prevent future dumping </li></ul>

37.
Tree Planting Techniques <ul><li>Planting hole must be 2 to 3 times wider than the root ball because roots spread out laterally rather than going deep </li></ul><ul><li>Do not plant tree too deep </li></ul><ul><li>Technique varies with plant materials and when planting on slopes </li></ul><ul><li>Use tree shelters and mulch to protect tree if necessary </li></ul><ul><li>Stake only on very windy sites or with top-heavy trees </li></ul>

38.
Tree Planting Specification Copyright International Society of Arboriculture. Used with permission.